Keyboard instrument

Abstract

A keyboard instrument includes a keyboard and an instrument case having a through hole penetrating therethrough from a top surface side to a bottom surface side and a positioning part configured to decide on a position of a music stand when a part of the music stand is disposed in the through hole.

What is claimed is: 
     
       1. A keyboard instrument comprising:
 a keyboard; and 
 an instrument case having a through hole which penetrates through the instrument case from a top surface side to a bottom surface side thereof, and a positioning part configured to determine a position of a music stand when a part of the music stand is disposed in the through hole. 
 
     
     
       2. The keyboard instrument according to  claim 1 ,
 wherein the instrument case comprises a grip section provided at a central portion thereof along an aligning direction of keys of the keyboard and at a rear side of the keys in a front-rear direction of the keyboard, and 
 wherein the grip section comprises a part of an inside wall of the through hole. 
 
     
     
       3. The keyboard instrument according to  claim 2 , comprising:
 a fulcrum portion provided on a top surface side of the grip section to function as a fulcrum when the part of the music stand is disposed in the through hole, so that the position of the music stand with respect to the instrument case is determined. 
 
     
     
       4. The keyboard instrument according to  claim 1 ,
 wherein the positioning part has a position determination section configured to determine a position at which to lock the music stand. 
 
     
     
       5. The keyboard instrument according to  claim 2 ,
 wherein the positioning part has a position determination section configured to determine a position at which to lock the music stand. 
 
     
     
       6. The keyboard instrument according to  claim 3 ,
 wherein the positioning part has a position determination section configured to determine a position at which to lock the music stand. 
 
     
     
       7. The keyboard instrument according to  claim 4 ,
 wherein the position determination section comprises an engagement recessed portion engagable with an engagement projecting portion provided on the music stand at a position corresponding to the position determination section. 
 
     
     
       8. The keyboard instrument according to  claim 5 ,
 wherein the position determination section comprises an engagement recessed portion engagable with an engagement projecting portion provided on the music stand at a position corresponding to the position determination section. 
 
     
     
       9. The keyboard instrument according to  claim 6 ,
 wherein the position determination section comprises an engagement recessed portion engageable with an engagement projecting portion provided on the music stand at a position corresponding to the position determination section. 
 
     
     
       10. The keyboard instrument according to  claim 4 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       11. The keyboard instrument according to  claim 5 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       12. The keyboard instrument according to  claim 6 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       13. The keyboard instrument according to  claim 7 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       14. The keyboard instrument according to  claim 8 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       15. The keyboard instrument according to  claim 9 , comprising:
 a guide section provided on a circumference of the through hole on the top surface side of the instrument case and configured to guide the music stand to the position determination section. 
 
     
     
       16. The keyboard instrument according to  claim 1 ,
 wherein the positioning part comprises an application point portion configured to resist a force in a second direction which is generated against a force in a first direction which is generated as a result of a musical score being placed to lean against the music stand in a state in which the part of the music stand is disposed in the through hole. 
 
     
     
       17. The keyboard instrument according to  claim 2 ,
 wherein the positioning part comprises an application point portion configured to resist a force in a second direction which is generated against a force in a first direction which is generated as a result of a musical score being placed to lean against the music stand in a state in which the part of the music stand is disposed in the through hole. 
 
     
     
       18. The keyboard instrument according to  claim 1 ,
 wherein in the instrument case, a keyboard side inside wall of the through hole and the positioning part are disposed substantially at right angles to each other, and 
 wherein the music stand has an insertion section projecting from a central lower end thereof, and the insertion section comprises an inside wall corresponding portion and a front-side positioning part which are both disposed substantially at right angles to the keyboard side inside wall and the positioning part, respectively. 
 
     
     
       19. The keyboard instrument according to  claim 2 ,
 wherein in the instrument case, a keyboard side inside wall of the through hole and the positioning part are disposed substantially at right angles to each other, and 
 wherein the music stand has an insertion section projecting from a central lower end thereof, and the insertion section comprises an inside wall corresponding portion and a front-side positioning part which are both disposed substantially at right angles to the keyboard side inside wall and the positioning part, respectively. 
 
     
     
       20. The keyboard instrument according to  claim 18 ,
 wherein the insertion section projecting from the central lower end of the music stand has a recessed groove portion, which extends in an aligning direction of keys of the keyboard while being concavely curved at a bottom portion thereof, provided on a front surface side of the insertion section a position further upwards than the front-side positioning part.